Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You learned this reading when you learned 出る, so if you can remember that, you should be able to remember this one too!
Mom went out shopping at the department store.
Since my husband went out with kids, I can play Dragon Quest as much as I want.
I’m going out to the beach with my family on Sunday.